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Growth, economy of feed utilization and carcass quality in pigs in relation to dietary protein level and antibiotic administration

Published online by Cambridge University Press:  27 March 2009

J. T. Morgan ,
F. R. Green ,
R. A. Costain  and
E. F. Williams
J. T. Morgan
Affiliation:
School of Agriculture, University of Nottingham
F. R. Green
Affiliation:
School of Agriculture, University of Nottingham
R. A. Costain
Affiliation:
School of Agriculture, University of Nottingham
E. F. Williams
Affiliation:
J. Sainsbury Ltd
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Extract

An experiment is described in which sixty-four individually-fed pigs were used to investigate the effects of dietary protein status and administration of aureomycin on growth, efficiency of feed utilization and carcass conformation.

The main features of the results obtained were:

1. Pigs fed a ‘standard’ protein diet showed superior performance in terms of growth and economy of feed utilization in comparison with a ‘substandard’ ration. Appreciable differences in carcass quality including reduction in backfat and total body fat, concomitant with an increase in the lean meat content also resulted from variation in ration protein content. These results have been discussed in terms of the possible significance of both dietary crude protein status and amino acid content.

2. The administration of aureomycin at a ‘nutritional’ level had no apparent effect on any of the indices of pig productivity subject to analysis.

3. The high killing percentages noted over-all, have been discussed in relation to dietary energy and fibre levels.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 52 , Issue 2 , April 1959 , pp. 170 - 176
Copyright
Copyright © Cambridge University Press 1959

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